01 Notes on Digital Systems

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Reuse- The Tradeoff• Functionality Vs. Silicon Real Estate– If we are reusing a design, are we only using a small set of thefunctionality ?- if so then this is wasteful (needs more Siliconsohigher cost)– E.g. we could use a 64 bit loadable counter every time weneeded a counter but this would be wasteful!– This not only an issue when selecting a component for a design,we also have to avoid building blocks which offer deluxefunctionality (e.g. “I’ll make this counter have inverted inputs aswell as normal inputs just in case it’s needed later”)24
Tools for Design &Implementation
Page 1 and 2: Electronic System Design 31.The Dig
Page 3 and 4: Nobel Prize in Physics - 2000Jack S
Page 5 and 6: Summary• Design Issues- IC’s an
Page 7 and 8: Some Definitions• Design- The pro
Page 9 and 10: Motivation• Building IC’s is ju
Page 11 and 12: MotivationHave to get things right
Page 13 and 14: The Problem• It’s the first day
Page 15 and 16: Design Flow- II• So, how do we st
Page 17 and 18: Hierarchical Approach- Example• I
Page 19 and 20: Hierarchical Approach- II• We now
Page 21 and 22: Regularity• Regularity is also us
Page 23: Design Reuse- Requirements• Block
Page 27 and 28: The Digital Design Flowentity ANDGA
Page 29: HDL’s- Background• Broadly 2 di

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